<%@ Control Language="C#" AutoEventWireup="true" CodeFile="CustomGatewayForm.ascx.cs" Inherits="CMSEcommerce_Example_CustomGatewayForm" %>

<asp:Label ID="lblTitle" runat="server" EnableViewState="false" CssClass="BlockTitle" />

<asp:Label ID="lblError" runat="server" EnableViewState="false" CssClass="ErrorLabel" Visible="false" />

<asp:Label ID="lblCardNumber" EnableViewState="false" runat="server" />

<asp:TextBox ID="txtCardNumber" runat="server" />

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using CMS.EcommerceProvider;

using CMS.GlobalHelper;

public partial class CMSEcommerce_Example_CustomGatewayForm : CMSPaymentGatewayForm

{

  protected void Page_Load(object sender, EventArgs e)

   {

      // Initialize label    

       lblTitle.Text = "Your credit card details";

       lblCardNumber.Text = "Credit card number:";

   }

  /// <summary>

  /// Initializes form controls with customer payment data.

  /// </summary>

  public override void LoadData()

   {

      // Display customer credit card number

       txtCardNumber.Text = ValidationHelper.GetString(this.ShoppingCartInfoObj.PaymentGatewayCustomData["CustomGatewayCardNumber"], "");

   }

  /// <summary>

  /// Validates customer payment data.

  /// </summary>

  /// <returns></returns>

  public override string ValidateData()

   {

      if (txtCardNumber.Text.Trim() == "")

       {          

           lblError.Visible = true;

           lblError.Text = "Please enter your credit card number";

          return lblError.Text;

       }

      return "";

   }

  /// <summary>

  /// Process customer payment data.

  /// </summary>

  /// <returns></returns>

  public override string ProcessData()

   {

      // Save credit card number

      this.ShoppingCartInfoObj.PaymentGatewayCustomData["CustomGatewayCardNumber"] = txtCardNumber.Text.Trim();

      return "";

   }

}

using System;

using System.Collections.Generic;

using System.Text;

using System.Web;

using System.Collections;

using CMS.EcommerceProvider;

using CMS.GlobalHelper;

using CMS.UIControls;

using CMS.ExtendedControls;

namespace CMS.CustomProvider

{

  /// <summary>

  /// Class representing Custom Gateway processor.

  /// </summary>

  public class CustomGateway : CMSPaymentGatewayProvider

   {

      /// <summary>

      /// Returns payment gateway form with custom controls.

      /// </summary>

      /// <returns></returns>

      public override CMSPaymentGatewayForm GetPaymentDataForm()

       {

          try

           {

              return (CMSPaymentGatewayForm)this.ShoppingCartControl.LoadControl("~/CMSEcommerce/Example/CustomGatewayForm.ascx");

           }

          catch

           {

              return null;

           }

       }

      /// <summary>

      /// Process payment.

      /// </summary>

      public override void ProcessPayment()

       {          

          // Get payment gateway url

          string url = this.GetPaymentGatewayUrl();

          if (url != "")

           {

              // Initialize payment parameters

               Hashtable parameters = InitializePaymentParameters();

              // Add required payment data to the url

               url = GetFullPaymentGatewayUrl(url, parameters);

              // Redirect to payment gateway to finish payment

              this.ShoppingCartControl.Page.Response.Redirect(url);

           }

          else

           {              

              // Show error message - payment gateway url not found

              this.ErrorMessage = "Unable to finish payment: Payment gateway url not found.";

              // Update payment result

              this.PaymentResult.PaymentDescription = this.ErrorMessage;

              this.PaymentResult.PaymentIsCompleted = false;

              // Update order payment result in database

              this.UpdateOrderPaymentResult();

           }

       }

      /// <summary>

      /// Returns table with initialized payment parameters.

      /// </summary>

      /// <returns></returns>

      private Hashtable InitializePaymentParameters()

       {

           Hashtable parameters = new Hashtable();

           parameters["orderid"] = this.ShoppingCartInfoObj.OrderId;

           parameters["price"] = this.ShoppingCartInfoObj.TotalPrice;

           parameters["currency"] = this.ShoppingCartInfoObj.CurrencyInfoObj.CurrencyCode;

           parameters["cardnumber"] = Convert.ToString(this.ShoppingCartInfoObj.PaymentGatewayCustomData["CustomGatewayCardNumber"]);

          return parameters;

       }

      /// <summary>

      /// Returns payment gateway url with payment data in query string.

      /// </summary>

/// <param name="url">Payment gateway url.</param>

      /// <param name="parameters">Initialized payment paremeters.</param>

      /// <returns></returns>

      private string GetFullPaymentGatewayUrl(string url, Hashtable parameters)

       {

          foreach (DictionaryEntry parameter in parameters)

           {

              // Add payment data to the url

               url = UrlHelper.AddParameterToUrl(url, Convert.ToString(parameter.Key), HttpUtility.UrlEncode(Convert.ToString(parameter.Value)));

           }

          return url;

       }

   }

}